KR101054560B1 - cleaner - Google Patents

Abstract

Provided is an electric vacuum cleaner with good storage and cleaning properties.

At least a part of the downstream side of the upstream hose portion 11 which is in a contracted state in the natural length state and is elongated by an external force is pulled out of the extension tube which is elongated in the natural length state and is contracted by an external force. The upstream side of the downstream hose part 12 as much as possible is connected. It is provided with the fixing means 33 which can maintain this extended state in the state which the upstream hose part 11 extended. At the time of cleaning, it is hold | maintained by the fixing means 33 in the state which extended the upstream hose part 11. FIG. At the time of storing, by storing the upstream hose part 11 in the contracted state and accommodating it in the extension pipe 6, the whole length of a pipe part can be shortened and favorable storage property can be ensured.

Storage property, cleaning property, upstream hose part, downstream hose part, pipe part

Description

Electric vacuum cleaner {ELECTRIC VACUUM CLEANER}

The present invention relates to an electric vacuum cleaner having a pipe portion connected to and connected to a suction side of an electric blower.

Conventionally, this type of vacuum cleaner has a vacuum cleaner main body which accommodates an electric blower. The vacuum cleaner body is connected to the suction side of the electric blower and is detachably connected to the pipe part. The pipe section includes an elongated cylindrical hose body connected to the cleaner body, and an elongated cylindrical extension tube connected to the distal end side of the hose body, and a suction port is provided at the distal end of the extension tube. body brush) is connected.

The hose body is formed into a corrugated box shape by a flexible synthetic resin or the like and can be bent in the axial direction. And this vacuum cleaner makes a part of extension tube hang in the recessed part provided in the lower part of a cleaner body in the state which stood up when a vacuum cleaner was stored (for example, refer patent document 1).

Since such a vacuum cleaner has a relatively long hose body in consideration of cleaning workability, the hose body must be wound in an extension pipe or a cleaner body in a stored state, so that the vacuum cleaner is not good in appearance and has a large storage space. There is a problem that storage properties are not good, for example.

Therefore, an electric vacuum cleaner is known in which the hose body is formed so as to be in a reduced state in a natural length state, and the storage body is improved by reducing the hose body during storage (see Patent Document 2, for example).

Patent Document 1: Japanese Unexamined Patent Application Publication No. 2006-255305 (3rd page, Figs. 1 and 2)

Patent Document 2: Japanese Unexamined Patent Publication No. 2006-326093 (pages 6 to 7, FIG. 8)

However, in the above-described vacuum cleaner, the hose body is cleaned while maintaining the elongated state against the decreasing force. In this cleaning operation, for example, the floor brush is to be cleaned by the negative pressure of the electric blower, that is, the bottom surface. In the case where the degree of vacuum is increased due to the adhesion to the pressure, the hose body is reduced due to the negative pressure, and thus the cleaning workability is not good.

This invention is made | formed in view of such a point, and an object of this invention is to provide the vacuum cleaner which secured favorable storage property and cleaning property.

The present invention includes a vacuum cleaner body accommodating an electric blower, and a pipe portion connected to and connected to the suction side of the electric blower body, wherein the pipe portion is accommodated in the extension pipe, the extension pipe is contracted in a natural length state. An upstream hose portion that is in a state and is extended by an external force, a downstream hose portion that is connected to a downstream side of the upstream hose portion in the extension pipe and is extended in a natural length state and contracted by an external force, and the upstream side It is provided with the fixing means which can maintain this extended state in the state which a hose part extended.

According to the present invention, when cleaning, the upstream hose portion is held by the fixing means in an extended state, thereby preventing the upstream hose portion from being reduced by negative pressure or the like of the electric blower during operation, thereby ensuring good cleaning properties, and By storing the upstream hose in a contracted state in the extension tube, the entire length of the tube can be shortened, and good storage properties can be ensured.

EMBODIMENT OF THE INVENTION Hereinafter, the structure of the vacuum cleaner of one Embodiment of this invention is demonstrated with reference to FIGS.

In Figs. 15 and 16 showing the entire vacuum cleaner, reference numeral 1 denotes a cleaner body, and the vacuum cleaner body 1 is a dust sucked together with the intake air generated by the driving of the electric blower 2 housed therein. The dust is collected in a dust collecting unit (not shown) such as a removable paper pack or a dust collecting cup which is a dust collecting device.

In addition, a main body suction port 3 that sucks air from the outside is opened in the vacuum cleaner main body 1, and a pipe part 4 is detachably connected to the main body suction port 3. And this cleaner main body 1 is equipped with the wheel which enables running on the floor surface as a to-be-cleaned surface. Here, it demonstrates as an upstream side and a downstream side on the basis of the direction through which the intake air flows at the time of operation of a vacuum cleaner.

As shown in Figs. 1 to 6 and 15 to 16, the pipe portion 4 includes a hose body 5 having a downstream end connected to the main body suction port 3, and an upstream end side of the hose body 5; It is provided with the flexible extension pipe 6 to which the downstream end side is connected. The bottom brush 7 is detachably attached to the upstream end of the extension pipe 6.

The hose body 5 is connected to the upstream side hose part 11 accommodated in the extension pipe 6 and located upstream, and is downstream of this upstream side hose part 11, and at least one part is extended from the extension pipe 6; The downstream hose part 12 which can be pulled out is provided, and these hose parts 11 and 12 are mutually connected and connected by the connection part as a connection part, ie, the hose connection joint 13 which is a connection pipe. And this hose body 5 is set so that it may become a total length of about 430 mm, for example in the state which contracted to the maximum, and may be a total length of about 800 mm, for example, in the state which extended to the maximum.

The upstream side hose part 11 is formed in the elongate cylindrical shape by synthetic resin, such as a flexible and stretchable member, for example, an elastomer. Moreover, this upstream hose part 11 is formed in the shape of a pleat box which has a bellows part 11a in a spiral shape, as shown to FIG. 7, FIG. 8, and FIGS. State, that is, a state where the interval of the corrugation box portion 11a is approximately zero in a state where no external force is applied, in other words, a state in which the corrugation box portion 11a is contracted in the axial direction (shrinkage state), and by applying an external force along the axial direction, the corrugation box portion It is formed so that the space | interval of 11a may be expanded and extended.

Therefore, the upstream side hose part 11 can hold | maintain an extended state by maintaining the external force applied to the axial direction, and in this extended state, it presses in the direction which returns to a natural length state, ie, a contraction direction.

In addition, the relationship between the length of the upstream side hose part 11 and the length of the stretchable extension tube 6 is at least when the upstream side hose part 11 is in a contracted state, and the extension tube 6 is in a contracted state. At this time, the whole upstream hose part 11 has the length relationship which can be accommodated in the extension pipe 6 inside. That is, the upstream hose part 11 in a contracted state is shorter than the full length of the extended tube 6 in a contracted state.

In this embodiment, the upstream hose part 11 is comprised by the length relationship accommodated in the extension pipe 6 in any case of a contraction state or the state extended to the maximum.

Moreover, in the upstream end part of the upstream hose part 11 inserted in the extension pipe 6, it is a cylindrical shape which is a hose slide flange as a sliding part which can slide along the axial direction in the upstream end part side of the extension pipe 6. As shown in FIG. The flange 15 is fixed, and the upstream side of the hose joint 13 is fixed to the downstream end. In the upstream side hose part 11 (hose body 5) comprised in this way, an upstream side is slidable in the axial direction inside the extension pipe 6. As shown in FIG.

The flange portion 15 is formed of a member having rigidity, for example, a synthetic resin or the like, and has a substantially cylindrical flange portion body 15a inserted into an upstream end of the upstream hose portion 11, and the flange portion body. It has the flange 15b which integrally protruded in the radial direction from the outer peripheral surface of the front-end | tip part side which is an upstream of (15a).

On the outer circumferential surface of the flange portion main body 15a, a substantially cylindrical flange engaging hook portion 15c, which is caught on the upstream inner circumferential surface of the upstream side hose portion 11, protrudes in the radial direction.

In a state where the flange engaging hook portion 15c is engaged with the upstream inner peripheral surface of the upstream hose portion 11, the upstream inner peripheral surface of the flange portion main body 15a and the upstream hose portion 11 is formed by, for example, an adhesive or the like. It is stuck. Moreover, the downstream end of this flange part main body 15a is formed so that diameter may become small gradually toward a downstream side.

The flange 15b has an outer diameter dimension larger than the outer diameter dimension of the upstream side hose part 11, and protrudes throughout the periphery of the flange part main body 15a. The outer circumferential surface of the flange 15b faces the upstream inner circumferential surface of the extension pipe 6, and a seal 15d, which is a sealing member, is inserted into the outer circumferential surface of the inner circumferential surface of the extension pipe 6 and the upstream side hose portion 11. It is configured to maintain confidentiality.

Moreover, the upstream side stopper surface of the round ring plane shape which is an upstream (front end side) contact surface which becomes a stopper when the flange part 15 slides upstream in the extension pipe 6 in the front end part of this flange 15b ( 15e) is formed. Similarly, in the proximal end on the downstream side of the flange 15b, the downstream stopper of the round ring plane shape which is a downstream side (proximal end side) contact surface which becomes a stopper when the flange part 15 slides downstream in the extension pipe 6. The surface 15f is formed.

On the other hand, the downstream hose portion 12 is formed into a thin elongated cylinder by a member having flexibility and elasticity, for example, an elastomer or the like, and has an inner diameter dimension and an outer diameter dimension than the upstream hose portion 11. Is large. In addition, the downstream hose portion 12 is formed in a pleat box shape having a pleat box portion 12a in a spiral shape as shown in FIGS. 7 to 14, and inside the pleat box portion 12a. The core wire which is not shown in figure which is a shape maintaining member as a shrinkage prevention part is provided.

By the core line, the wrinkle box portion 12a is maintained at a predetermined distance larger than zero, i.e., not completely contracted in the natural length state, and by applying an external force (tensile force) along the axial direction. It is formed so that the space | interval of 12a may be expanded and extended.

That is, the downstream hose portion 12 is less likely to be contracted by the external force or the negative pressure of the electric blower 2 than the upstream hose portion 11, in other words, the shrinkage of the external hose or the negative pressure of the electric blower 2 is different. It is formed smaller than this upstream hose part 11.

In addition, the extensibility of this downstream hose part 12 may be formed equivalently to the upstream hose part 11.

Moreover, this downstream hose part 12 has the length which can be accommodated in the extension pipe 6 at least one part in the state which the upstream hose part 11 contracted. In this embodiment, the downstream hose part 12 has a total length longer than the upstream hose part 11, and the upstream side is inside the extension pipe 6 in the state in which the downstream hose part 12 is contracted. The downstream side is always exposed to the outside from the downstream end side of the extension pipe 6.

The downstream end of the hose connecting joint 13 is inserted into and fixed to the upstream end of the downstream hose part 12, and the downstream end is a substantially cylindrical clamp which is a detachable part for attaching and detaching the main body suction port 3. It is inserted into the part 17 (refer FIG. 15, FIG. 16), and is fixed. And the outer peripheral surface of the hose connection joint 13 and the clamp part 17 of the downstream hose part 12 hold | maintains and fixes in the extension pipe 6 in the state which contracted a part of downstream hose part 12 in the contracted state. A round ring-shaped hose fixing ring 18 as a defendant is provided (see Figs. 16, 9 and the like).

As shown in Fig. 16, the clamp portion 17 is exposed to the outside of the clamp button 17a, which is an operation portion, and the main body suction port 3 can be disconnected by the operation of the clamp button 17a.

The hose fixing ring 18 is downstream of the extension pipe 6 when the upstream hose part 11 has received a portion of the downstream hose part 12 in the extension pipe 6 in a state in which the upstream hose part 11 is contracted in the axial direction in a natural length state. It is a part which fixes the downstream hose part 12 to an edge part, is formed of the member which has rigidity, for example, synthetic resin, etc., and is fixed integrally with respect to the downstream hose part 12. As shown in FIG.

As shown in Figs. 10 and 11, the hose retaining ring 18 is provided with a hook-type notched convex portion projecting in the direction of the center axis at the upstream end portion, and at the downstream base end portion. The part 18a is formed.

The engagement convex which is not shown of the hose retaining ring 18 is inserted and fitted between the corrugation box part 12a in the outer peripheral surface of the downstream hose part 12, and the hose retaining ring 18 is inserted into the downstream hose part 12 ) Is prevented from falling out in the axial direction.

The locking recess 18a is a part which is caught when the hose fixing ring 18 is fixed to the downstream end of the extension pipe 6, and is formed in a concave groove shape over the entire circumference of the base end of the hose fixing ring 18.

As shown in FIGS. 1 to 3, 7, 8, and 12 to 14, the hose connecting joint 13 is an upstream side connecting portion (upstream side connecting portion) formed in a substantially cylindrical shape on the upstream side (leading end side). Upstream cylindrical portion 13a as a lower portion, downstream cylindrical portion 13b as a downstream connecting portion (downstream connecting portion) formed in a substantially cylindrical shape on a downstream side (base end side), and a middle of these cylindrical portions 13a and 13b. It is provided with the joint flange part 13c of the round ring flange shape (shade shape) as a sliding contact part which protruded radially over the whole outer peripheral surface circumference.

And a pair of guide convex part 13d which is a guide protrusion which protruded linearly in radial direction from the outer peripheral surface of the position orthogonal to the axis line of the hose connection joint 13 in this joint flange part 13c ( 1 to 3).

The upstream cylindrical part 13a has an outer diameter dimension smaller than the inner diameter dimension of the upstream hose part 11, and is a cylinder as an upstream connection engaging part which is caught by the inner peripheral surface of the downstream side of the upstream hose part 11 on the outer peripheral surface. The convex part 13e (refer FIG. 1) of the shape is formed.

In the state where this convex part 13e is caught by the inner peripheral surface of the downstream of the upstream hose part 11, the upstream cylindrical part 13a and the inner peripheral surface of the downstream of the upstream hose part 11 are, for example, adhesive agents, etc. It is stuck by. Moreover, the upstream end outer peripheral surface of this upstream cylindrical part 13a is formed so that diameter may become small gradually toward an upstream (refer FIG. 7 and FIG. 8).

The downstream cylindrical portion 13b has an outer diameter dimension smaller than the inner diameter dimension of the downstream hose portion 12 and larger than the outer diameter dimension of the upstream cylindrical portion 13a, and is larger than the upstream cylindrical portion 13a. It has an inner diameter dimension. Therefore, the hose joint 13 is substantially the middle part of the axial direction which is the continuous part of the cylindrical parts 13a and 13b, and the diameter becomes wide in step shape.

Moreover, this downstream cylindrical part 13b has the cylindrical convex part 13f (refer FIG. 1) as the downstream connection engaging part which hangs on the inner peripheral surface of the upstream of the downstream hose part 12 on the outer peripheral surface, In the state where this convex part 13f was caught by the inner peripheral surface of the upstream of the downstream hose part 12, the downstream cylindrical part 13b and the inner peripheral surface of the upstream of the downstream hose part 12, for example, an adhesive agent etc. It is stuck by. Further, the downstream end outer peripheral surface of the downstream cylindrical portion 13b is formed to gradually decrease in diameter toward the downstream side (see FIG. 12 and the like).

The joint flange part 13c is formed in the diameter dimension which the front end part opposes the inner peripheral surface of the extension pipe 6 with a some clearance gap. Moreover, this joint flange part 13c is formed inclined so that the diameter of the upstream end surface may become small gradually toward an upstream (refer FIG. 7 and FIG. 8).

The pair of guide convex portions 13d are fitted to the inner surface side of the extension pipe 6 from the outer circumferential surface of the hose connecting joint 13 so that the sliding movement of the hose body 5 is prevented in the axial direction of the extension pipe 6. It is configured to guide along. Further, each guide convex portion 13d is a boss formed such that at least the downstream portion of the tip portion has a curved shape, that is, no corner portion. In this embodiment, the whole front-end | tip part of each guide convex part 13d is formed in substantially spherical shape.

On the other hand, the extension pipe 6 is an inner pipe which is a first extension pipe part as an extension pipe part located upstream as shown in Figs. 1 to 9, that is, an upstream extension pipe 21 and a downstream side of the upstream extension pipe 21. It is provided with the outer pipe which is a 2nd extension pipe part as an extension pipe part connected to the downstream side, ie, the downstream extension pipe 22, and the downstream of the upstream extension pipe 21 is slidable to the upstream of the downstream extension pipe 22 in an axial direction. It is inserted so that it can expand and contract by the relative sliding of these extension pipes 21 and 22. FIG.

Moreover, on the outer peripheral surface of this extension pipe 6, the expansion clamp 23 which is a 1st locking means as an extension | strength operation part for maintaining this extension pipe 6 in the state which extended | stretched to the maximum is provided especially in the upper surface, and the hose body ( Hose clamps 24 and 24 serving as second locking means serving as holding means for holding 5) in the extension pipe 6 are provided on both left and right sides intersecting (orthogonally) in the axial direction.

And this extension pipe 6 is set so that it may become a total length of about 610 mm in the state which contracted as much as possible, for example, and will be a total length of about 870 mm, for example in the state which is extended to the maximum.

The upstream extension pipe 21 is connected to the upstream side of the first elongated cylindrical part 26 of the elongated cylindrical shape which forms an upstream side of this upstream extension pipe 21, and downstream of this 1st extension pipe part 26, and is integrated upstream. It has the elongate cylindrical 2nd extension pipe part 27 which forms the downstream side of the side extension pipe 21. As shown in FIG.

The 1st extension pipe part 26 is provided with the brush clamp part 26a of diameter smaller than the 1st extension pipe part 26 as a suction sphere connection part which makes the bottom brush 7 detachable at an upstream end, and this brush use The inner circumferential surface of the continuous portion with the clamp portion 26a forms an upstream sliding control surface 26b for restricting the sliding movement of the upstream hose portion 11 (Figs. 1 to 4).

The first extension pipe portion 26 is provided with a locking projection 26c for hooking the pipe portion 4 to the cleaner main body 1 in a housed state on a lower surface of the downstream side than the brush clamp portion 26a. Moreover, the fall prevention convex part 26d which is the stopper of the downstream extension pipe 22 is formed in the outer peripheral surface of the downstream of this 1st extension pipe part 26 over the whole circumferential direction (FIG. 1, FIG. 4, FIG. 7). And so on).

The brush clamp part 26a is exposed to the outside from the clamp part cover 26e, and the brush clamp button 26f is connected to the upstream extension pipe 21 by operation of this brush clamp button 26f. The bottom brush 7 can be separated from this upstream extension pipe 21.

As described above, the upstream sliding control surface 26b has a stepped portion protruding in the central axial direction due to the diameter of the brush clamp 26a being smaller than that of the first extension pipe portion 26. . Therefore, when the hose body 5 slides, the upstream stopper surface 15e of the flange 15 comes in contact with the stepped portion so that the sliding position (sliding amount) toward the upstream side of the hose body 5 is regulated.

The locking protrusion 26c is formed in a substantially L shape as viewed from the side in which the tip end side is bent upstream with respect to the first extension pipe portion 26. As shown in Fig. 15, the distal end side of the locking protrusion 26c can be hooked to the recessed groove 28, which is a pipe locking recess provided on the bottom of the cleaner body 1, and the hooking portion 4 can be hooked up by the hooking. Is configured to be fixed to the cleaner body 1.

1 to 8, the fall prevention convex portion 26d protruding from the outer peripheral surface of the downstream side of the first extension tube portion 26 is contacted by the upstream end of the downstream extension tube 22 so that the downstream extension tube 22 The sliding position of the upstream side of the downstream extension pipe 22 is prevented from being slipped upstream.

The second extension pipe portion 27 has an axial dimension longer than that of the first extension pipe portion 26. Moreover, the step part 27a (refer FIG. 8) which prevents a fall of the upstream hose part 11 which slides in the 1st extension pipe 26 in the inner peripheral surface of the upstream of this 2nd extension pipe part 27 is provided. It is formed to protrude in the direction of the central axis. In addition, in the outer circumferential surface of the upper side of the second extension pipe portion 27, a plurality of spaced apart portions, for example, a hole portion in which the locking projection 23e of the elastic clamp 23 can be coupled to the vicinity of the upstream end and the downstream end ( 27b and 27c (see Fig. 7, Fig. 1 and the like) are formed.

In addition, the inner circumferential surface of the downstream end of the second extension pipe portion 27 is formed to be inclined so that the diameter gradually expands toward the downstream side (see Fig. 10). Moreover, the guide as a fitting guide part which each guide convex part 13d of the hose connection joint 13 of the hose body 5 fits in the both axial direction whole part of the inner peripheral surface of this 2nd extension pipe part 27 is fitted. Grooves 27d and 27d (see Figs. 1, 7-9, etc.) are formed. The outer circumferential surface of the second extension pipe portion 27 corresponding to the guide groove portion 27d is formed so as to protrude in the radial direction from the fall prevention step portion as the downstream fall prevention portion of the downstream extension pipe 22.

At the downstream end of the first extension pipe section 26, the downstream end of the first extension pipe section 26 is in contact with the stepped portion 27a protruding toward the inner circumferential side of the downstream end section. Moreover, when the upstream hose part 11 of the hose body 5 slides downstream, the stopper surface 15f of the flange part 15 of the upstream hose part 11 contacts the step part 27a. It has the function of the hose body stopper (hose body fall prevention part) which restricts the further sliding movement of the upstream hose part 11 to the downstream side, and prevents the hose body 5 from coming off.

The hole parts 27b and 27c of the 2nd extension pipe part 27 penetrate in the center axis direction, and the part of the extension clamp 23 couple | bonds, and the 2nd extension pipe part 27 and the downstream extension pipe 22 are connected. The elastic state of the structure is configured to be fixed. Specifically, in a state in which a part of the expansion clamp 23 is coupled to the hole 27b, the extension tube 6 is kept in the state of being fully contracted, and a part of the expansion clamp 23 is coupled to the hole 27c. In the closed state, the extension pipe 6 is maintained in the state in which it is extended.

As shown in Fig. 7 and Fig. 8, each guide groove portion 27d is fitted with a tip end side of each guide convex portion 13d provided in the hose connecting joint 13, which is a connecting portion of the hose body 5, thereby fitting the hose. It is comprised so that the sliding movement of the sieve 5 may be guided along the axial direction of the extension pipe 6. In addition, each guide groove part 27d is formed so that the outer peripheral side may protrude in the radial direction corresponding to the shape of the inner peripheral side (FIG. 6, FIG. 16).

The hole part 27c of the 2nd extension pipe part 27 contacts a part of the expansion | stretching clamp 23 installed in the downstream extension pipe 22, etc., and restricts the sliding position to the downstream side of the downstream extension pipe 22, and is downstream. This is to prevent the side extension pipe portion 22 from coming off to the downstream side.

A downstream side of the second extension pipe portion 27 of the upstream extension pipe 21 is inserted into the upstream extension pipe 21, so that the upstream extension pipe 21 and the upstream extension pipe 21 are relatively along the axial direction. It is comprised so that the extension pipe 6 may expand and contract by sliding.

7 and 8, the downstream extension tube 22 is stretched relative to the upstream extension tube 21 in the stretched state, that is, the stretched state and the contracted state, respectively. The hole portion 22a, which is a clamp insertion hole as a locking portion insertion hole for fixing by 23, is drilled.

The expansion and contraction clamp 23 is disposed above the outer peripheral surface on the downstream side than the hole portion 22a, and the installation portion 22b is located at the position above the outer peripheral surface on the downstream side than the installation position of the expansion and contraction clamp 23 (Fig. 1, etc.) is formed. The mounting portion 22b is provided with a handle operating portion 31 (see Figs. 15 and 16) as an operating portion that can select an operation mode or the like of the electric blower 2.

And the hose clamp 24 is arrange | positioned in the both sides position which cross | intersects (orthogonally) in the axial direction downstream of the downstream extension pipe 22, respectively. Moreover, the guide recessed part 22c as a guide part fitting part of the upstream extension pipe 21 is the whole of the downstream extension pipe 22 in the both inner surface parts which intersect (orthogonally) with the axial direction of this downstream extension pipe 22. It is formed along the axial direction over the length, respectively. In addition, a hose connection joint stopper 22d (hereinafter simply referred to as stopper 22d), which is a substantially cylindrical release preventing cylinder as a release preventing member, is inserted and fixed inside the downstream side of the downstream extension pipe 22 ( 1 to 4 and 9 to 14).

The hole part 22a formed in the downstream extension pipe 22 is the elastic clamp 23 in the state aligned with either one of the hole parts 27b, 27c of the 2nd extension pipe part 27 of the upstream extension pipe 21. As shown in FIG. Is a hole for holding and fixing the axial position of the upstream extension pipe 21 and the downstream extension pipe 22 by inserting a part of ().

As shown in Fig. 1, the mounting portion 22b is formed in a longitudinal shape along the axial direction, and has a groove shape surrounded by a rib portion 22e protruding from the outer circumferential surface of the downstream extension pipe 22. . Moreover, in this installation part 22b, a pair of substantially cylindrical protrusions 22f and 22f as an operation part fixing means for installing the handle operating part 31 are spaced apart from each other in the axial direction of the downstream extension pipe 22 upwards. It protrudes.

Each guide recess 22c of the downstream extension pipe 22 is formed in a straight shape over the entire length of the downstream extension pipe 22, and in the guide recess 22c in the contracted state of the extension pipe 6 upstream. Each guide groove portion 27d on the outer circumferential side of the second extension pipe portion 27 in the side extension pipe 21 is slidably fitted so that the axial direction of the upstream extension pipe 21 with respect to the downstream extension pipe 22. To guide the sliding movement (Fig. 6, Fig. 5).

Sliding movement of the hose body 5 by communicating with the downstream side of each guide groove part 27d in the state in which the extension pipe 6 is extended, and fitting the tip end side of each guide convex part 13d of the hose body 5 to fit. It is configured to guide along the axial direction of the extension pipe (6).

Accordingly, the hose body is formed by these guide recesses 22c, the guide grooves 27d of the second extension pipe portion 27 of the downstream extension pipe 22, and the guide protrusions 13d of the hose connecting joint 13. The guide part 32 (FIG. 1) which guides (5) so that sliding along the extension pipe 6 is comprised is comprised.

In addition, the opening part 22g which is a clamp insertion part as a retaining means insertion part is inserted in the vicinity of the downstream end of each guide recess part 22c so that the hook part mentioned later of each hose clamp 24 can protrude into the guide recess part 22c ( 9 and 10) are formed respectively.

And the downstream end of each guide recessed part 22c has a stopper surface 22h (refer FIG. 12) as a guide stopper which regulates the sliding position of each guide convex part 13d of the hose connection joint 13, and is planar. It is formed.

The stopper surface 22h becomes a terminal end downstream of each guide recess 22c, and the guide convex portion 13d of the hose connecting joint 13 is brought into contact with each other to extend the hose body 5 in the axial direction. The maximum amount of is regulated. Moreover, the space part S which the guide convex part 13d of the hose connection joint 13 can fit is formed between this stopper surface 22h and the opening part 22g (FIG. 12, 14).

The stopper 22d is integrally provided at the downstream end of the downstream extension pipe 22, and the upstream end of the stopper 22d is a slight gap between the downstream ends of the second extension pipe part 27 of the upstream extension pipe 21. They are to face each other with. And the upstream end surface of this stopper 22d is comprised so that the sliding position of each guide convex part 13d of the hose connection joint 13 with the stopper surface 22h may be regulated.

Here, the handle operation part 31 protrudes toward the base end side, and the holding | grip part 31a which an operator grips at the time of cleaning is carried out, and this holding part 31a operates the electric blower 2 in the cleaner main body 1, etc. for predetermined operation | movement. Communication as a signal transmission part for transmitting the setting button 31b which is a some operation button set to a mode, and the signal generated by operation of this setting button 31b to the cleaner main body 1 or the floor brush 7 An infrared transmitter 31c is provided.

The expansion clamp 23 is provided with the expansion clamp main body 23a as a expansion and contraction operation body main body formed in the longitudinal shape along the axial direction of the downstream extension pipe 22, as shown to FIG. Both sides of this expansion clamp main body 23a are axially rotatably supported on both sides of the downstream extension pipe 22.

Coil spring 23c which is an urging means for the telescopic operation section as a urging means between the axially supported both side portions and the base end portion 23b (downstream side of the downstream extension tube 22) between the outer circumferential surface of the downstream extension tube 22. This arrangement | positioning and the base end part 23b of the elastic clamp 23 is pressing in the upward direction.

Further, at the distal end portion 23d (upstream side of the downstream extension pipe 22) of the expansion clamp body 23a, a locking projection 23e as a locking hook projecting in the central axis direction of the downstream extension pipe 22 is formed. have.

The proximal end 23b of the telescopic clamp main body 23a is a pressurized portion (operational section) to be pressed when the telescopic clamp 23 is operated, and the proximal end 23b is extended downstream of the coil spring 23c against the compression. By pressing toward the (22) side, the distal end portion 23d of the elastic clamp body 23a is rotated so as to be spaced apart from the downstream extension pipe 22.

Then, when the locking protrusion 23e is retracted from the hole 22a and the coupling between the locking protrusion 23e and the hole 27b or the hole 27c of the upstream extension pipe 21 is separated, the upstream extension pipe ( 21) and the extension slide of the downstream extension pipe 22 are enabled (FIG. 8).

In addition, by releasing the pressing of the base end 23b, the locking projection 23e rotates so that the leading end 23d of the elastic clamp body 23a approaches the downstream extension pipe 22 by the pressing of the coil spring 23c. When inserted into the hole portion 27b or the hole portion 27c aligned with the portion 22a, the upstream extension tube 21 and the downstream extension tube 22 cannot expand or slide, that is, expand (slip) It is configured to be in a locked state (Fig. 7).

Each hose clamp 24 has a hose clamp body 24a as a retaining means body formed in a length shape along the axial direction of the downstream extension pipe 22 as shown in FIGS. 1 to 4 and 10 to 14. Doing. The hose clamp main body 24a is axially rotatably supported at both sides of the downstream extension pipe 22 at both sides.

Hold | maintained as a press means between the outer side surface of the downstream extension pipe 22 in the position between the both side parts of this axially supported hose clamp main body 24a, and the base end part 24b (downstream of the downstream extension pipe 22). A coil spring 24c, which is a means for pressing means, is disposed, and the base end 24b of the hose clamp 24 is pressed upward.

Moreover, the base end 24b of this hose clamp main body 24a is located downstream from the stopper 22d arrange | positioned at the downstream end of the downstream extension pipe 22, and the base end 24b of this hose clamp main body 24a. The engaging hook portion 24d as the locking fixing means protrudes from the surface facing the downstream extension tube 22 in the vicinity of the?

Moreover, the hose clamp hook part as a holding means latching hook part which protrudes in the center axis direction of the downstream extension pipe 22 to the tip part 24e (upstream side of the downstream extension pipe 22) of this hose clamp main body 24a. 24f is formed.

The hooking hook 24d is for hooking the hose fixing ring 18, and the tip end side is bent toward the downstream end of the downstream extension pipe 22 to be fitted into the hooking recess 18a of the hose fixing ring 18. Customization is possible (FIG. 10).

In addition, the hose clamp hook portion 24f is inserted into the opening 22g of the downstream extension pipe 22 and protrudes into the downstream extension pipe 22. Moreover, the inclined surface 24g which is the pressing contact surface as a contact surface is inclined upstream of this hose clamp hook part 24f so that it may incline toward the center axis side of the downstream extension pipe 22 gradually from an upstream side to a downstream side. Further, on the downstream side of the inclined surface 24g, a locking surface 24h as a planar locking means locking portion is formed.

The hose clamp hook portion 24f is formed in a substantially triangular shape when viewed from the side, and each hook hook portion 24d, the hose clamp hook portion 24f, the hose fixing ring 18, and the like is located upstream of the hose portion 11. ) Constitutes a fixing means 33 (Fig. 1) capable of maintaining an extended state.

The inclined surface 24g makes the hose clamp main body 24a of the coil spring 24C by the downstream end part of the 2nd extension pipe part 27 contact this inclined surface 24g, when the extension pipe 6 is fully contracted. The base end portion 24b side is rotated in a direction approaching the outer circumferential surface of the downstream extension tube 22 against the pressure, that is, the hooking hook portion 24d is fitted to the locking recess 18a of the hose fixing ring 18. It is possible to maintain the aligned state.

Therefore, the fixing means 33 not only functions as an upstream hose part holding means which can be maintained in the state in which the upstream hose part 11 is fully extended, but also the hose fixing ring 18 of the downstream hose part 12. It has the function of the downstream hose part holding means which can be maintained in the state which contracted the upstream side to the maximum.

The latching surface 24h has the guide convex portion 13d of the hose connecting joint 13 held in the state where the hose body 5 is fully extended, so that the upstream hose portion 11 of the hose body 5 is extended. It is kept in a state (Fig. 14).

The bottom brush 7 is provided with the case body 35 extended horizontally, and the communication pipe 36 rotatably connected to the back part of this case body 35. As shown in FIG.

In the case body 35, a suction port (not shown) is formed in an opening on a lower surface opposite to the bottom surface. The suction port is rotatably provided, for example, as a rotary cleaning body.

The case body 35 is rotatably connected to the communication tube 36 in the up-down direction, the left-right direction, the circumferential direction, etc., and the front end side of the communication tube 36 communicates with the suction port inside the case body 35. At the same time, the proximal end side is inserted into the brush clamp portion 26a and is secured to the extension pipe 6 by being caught by the elastic clamp 23.

Next, the operation of the above embodiment will be described.

In the storage state of the vacuum cleaner shown in Fig. 15, the cleaner main body 1 is placed on the bottom face with the rear portion downward so that the front side faces upward, and the locking projections of the extension pipe 6 of the pipe portion 4 The tubular part 4 is caught by the vacuum cleaner main body 1 by 26c engaging the recessed recessed part 28 of the bottom part of the vacuum cleaner main body 1.

In this state, the pipe part 4 is a state in which the upstream side of the hose body 5 slides to the upstream side of the extension pipe 6 in the state which the extension pipe 6 fully contracted, and the upstream hose part 11 Is in the maximum length of the natural length contracted and is stored in the first extension pipe portion 26 of the upstream extension pipe 21 of the extension pipe 6. That is, a part of the upstream side of the downstream hose part 12 is accommodated in the compressed state in the 2nd extension pipe part 27 of the downstream extension pipe 22 of the extension pipe 6, and this downstream hose part 12 The downstream side of is exposed from the downstream end of the downstream extension pipe 22 of the extension pipe 6 (FIG. 5).

Specifically, the locking projection 23e of the elastic clamp 23 provided in the downstream extension pipe 22 of the extension pipe 6 extends the second extension of the upstream extension pipe 21 from the opening 22g of the downstream extension pipe 22. It fits in the hole part 27b of the pipe part 27, and each extension pipe 21 and 22 is mutually caught (FIG. 7).

On the other hand, the downstream end of the downstream extension pipe 22 is in contact with the inclined surface 24g of the hose clamp hook portion 24f of the hose clamp 24 which protrudes from the opening 22g into the guide recess 22C. Pushing the tip 24e of the hose clamp 24 against the pressure of the 24c, the hook retaining portion 24d of each hose clamp main body 24a moves the hose fixing ring 18 of the hose body 5 to each other. The state which caught on the latching recessed part 18a of is maintained (the state of FIG. 10).

In addition, the hose body 5 has an upstream side stopper surface 15e of the flange portion 15 of the upstream side extension tube 21 of the extension tube 6 in a state where the upstream side hose portion 11 is contracted in a natural length state. It is in contact with the upstream sliding control surface 26b of the first extension pipe portion 26.

Then, the hooking hook 24d of each hose clamp main body 24a and the hooking recess 18a of the hose fixing ring 18 are hooked upstream from the hose fixing ring 18 of the downstream hose 12. The part of the side is kept in the axially compressed state in the downstream extension pipe 22 of the extension pipe 6.

At the time of cleaning, by pulling up the pipe part 4 upward from the state of FIG. 15, the latching projection part 26c of the extension pipe 6 is isolate | separated from the recessed groove part 28 of the cleaner main body 1, and the telescopic clamp 23 is operated. By extending the extension pipe 6, the hose body 5 is pulled downward and the whole hose body 5 is extended.

Specifically, from the state shown in FIG. 7, as shown in FIG. 8, the base end part 23b of the elastic clamp 23 is pressed against the pressure extension of the downstream side pipe 22 against the pressure of the coil spring 23c, and the locking projection part is carried out. When 23e is withdrawn from the hole 27b, the downstream hose part 12 which was compressed is extended so that it may return to a natural length state.

Since the flange part 15 of the tip end of the upstream hose part 11 is in contact with the upstream sliding control surface 26b by the extension of this downstream hose part 12, the upstream extension pipe 21 is relatively high. The inside of this downstream extension pipe 22 slides. As a result, as shown in Figs. 9 to 11, the downstream end of the downstream extension pipe 22 is spaced apart from the inclined surface 24g of the hose clamp hook portion 24f of each hose clamp 24, and the respective coil springs 24c. Each hose clamp main body 24a is interlocked and rotated so that the tip part 24e of each hose clamp main body 24a may approach the downstream extension pipe 22 side by the pressure of ().

The base end 24b of each hose clamp 24 is spaced apart from the downstream extension pipe 22 so that the hook hook 24d of the hose clamp main body 24a is separated from the hook recess 18a of the hose fixing ring 18. As a result, the locking of the hose body 5 is released, and a portion near the hose fixing ring 18 of the downstream hose part 12 protrudes from the downstream end of the downstream extension pipe 22 of the extension pipe 6.

Then, the upstream extension pipe 21 and the downstream extension pipe 22 are gripped and tensioned with each other, and the hole 22a and the upstream extension pipe of the downstream extension pipe 22 are extended in the state where the extension pipe 6 is fully extended. The hole portion 27c of the 21 is aligned and the proximal end 23b of the elastic clamp 23 is returned by the pressure of the coil spring 23c, that is, in the direction of approaching the outer peripheral surface of the downstream extension pipe 22. By rotation, the locking projection 23e is caught in the hole 27c (Fig. 3).

When the hose body 5 is pulled downward in this state, each guide convex portion 13d of the hose connecting joint 13 is guided to each guide groove portion 27d of the second extension pipe portion 27 (Fig. 4). The stopper surface 15f of the flange portion 15 is formed in the first extension pipe portion 26 of the upstream extension pipe 21 of the extension pipe 6 by the upstream side hose part 11 of the hose body 5. It slides until it contacts the upstream end of the step part 27a of the extension pipe part 27. As shown in FIG.

Thereafter, when the hose body 5 is further tensioned to the downstream side, each guide convex portion 13d of the hose connecting joint 13 slides the inside of each guide groove portion 27d downward, and then each guide recess 22c ) Sliding inside more downstream.

Thereby, since the flange part 15b is caught by the step part 27a, the upstream hose part 11 is substantially equal to the total sum of the axial dimension of the 2nd extension pipe part 27 and the downstream extension pipe 22. As shown in FIG. It extends to length (Fig. 6).

As shown in Figs. 12 to 14, each guide convex portion 13d is an inclined surface of the hose clamp hook portion 24f of each hose clamp 24 that protrudes from each opening 22g into the guide recess 22c. The inclined surface 24g is pushed up against the pressure of the coil spring 24C by contacting 24g and moving the guide convex portion 13d downward toward the inside of the guide recess 22C.

When each guide convex part 13d moves over this inclined surface 24g to the space part S, it rotates so that the tip part 24e of each hose clamp main body 24a may be returned by the pressure of the coil spring 24c. At the same time, the upstream hose portion 11 is pushed in the direction of returning to the natural length state, whereby each guide convex portion 13d is caught by the engaging surface 24h of each hose clamp main body 24a. The stretched state of 11) is maintained, and the use state shown in Fig. 16 is obtained.

Therefore, the upstream hose part 11 is extended | stretched and extended | extended by the operation | movement which extends the extension pipe 6, and draws the hose body 5 to the downstream side, and the compression force in the contraction direction accumulates in the pipe part 4.

Then, the worker places the vacuum cleaner main body 1 on the bottom surface, connects the power plug to an outlet (not shown), grips the gripping portion 31a of the handle operating portion 31, and various setting buttons 31b. The signal is transmitted from the infrared transmitter 31c to the controller in the cleaner main body 1 to operate the electric blower 2 in a desired operation mode, and the floor brush 7 is placed on the floor and then moved back and forth to the floor. The dust on the surface is sucked from the suction port under the action of the negative pressure caused by the driving of the electric blower 2.

The suctioned dust is connected to the communication pipe 36, the upstream extension pipe 21, the downstream extension pipe 22, the upstream hose part 11, the downstream hose part 12 together with the air from the suction port of the bottom brush 7; It is sequentially sucked into the main body suction port 3, air and dust are separated from the dust collecting part, dust is collected, and the air is sucked by the electric blower 2, and then exhausted to the outside of the cleaner main body 1 as exhaust wind.

When the cleaning is finished, the operator stops the drive of the electric blower 2 by operating the setting button 31b, pulls out the power plug from the outlet, and then moves the base end 24b of each hose clamp 24 to the coil spring ( By pressing against the pressing of 24c, the tip 24e of the hose clamp main body 24a is rotated, and the hose clamp hook 24f is withdrawn from the opening 22g of the downstream extension pipe 22. As shown in FIG.

Then, the coupling between the hose clamp hook portion 24f and the guide convex portion 13d of the hose connecting joint 13 is separated, and the extended upstream hose portion 11 is contracted in the direction of returning to the natural length state. The upstream side hose part 11 slides the inside of the extension pipe 6 to the upstream side, and the downstream hose part 12 of the hose body 5 which protruded to the downstream side of the extension pipe 6 with this sliding movement. A part is led into the extension pipe 22 downstream of the extension pipe 6.

At this time, the upstream side hose part 11 is each guide convex part 13d of the hose connection joint 13, and each guide concave part 22c of the downstream side extension pipe 22, and each guide of the 2nd extension pipe part 27 are as follows. The upstream side stopper surface 15e of the flange portion 15 is guided to the groove portion 27d so that the upstream sliding control surface 26b of the first extension tube portion 26 of the upstream extension tube 21 of the extension tube 6 is extended. It comes into contact with.

In this state, the operator grips the vicinity of the hose fixing ring 18 of the hose body 5, and pushes the hose fixing ring 18 slightly to the downstream end of the downstream extension pipe 22 of the extension pipe 6, The base end portion 24b of the hose clamp 24 is pressed against the downstream extension pipe 22 side against the pressure of the coil spring 24c so that the locking hook portion 24d is locked by the locking recess 18a of the hose fixing ring 18. It keeps getting caught.

Then, when the base end portion 23b of the elastic clamp 23 is pressed against the pressure of the coil spring 23c, the locking projection 23e retracts from the hole portion 27c of the second extension tube portion 27 to extend the extension tube 6 ) Becomes contractible.

Subsequently, when the downstream extension pipe 22 is pushed into the upstream side which is the upstream extension pipe 21 side, the hose connection joint 13 and the hose clamps 24 and 24 come close to each other so that these hose connection joint 13 and the hose clamp 24, The downstream hose part 12 located between 24 is compressed.

When the opening portion 22g of the downstream extension pipe 22 and the hole portion 27b of the second extension pipe portion 27 of the upstream extension pipe 21 coincide with each other, the locking protrusion 23e of the expansion and clamping clamp 23 is opened. 22g), it fits into the hole part 27b, and hangs each extension pipe 21 and 22 mutually.

In addition, the downstream end of the downstream extension pipe 22 contacts the inclined surface 24g of the hose clamp hook portion 24f of the hose clamp 24 which protrudes from the opening 22g into the guide recess 22C. Push up the tip 24e of the hose clamp 24 against the pressure of the 24c to engage the hook 24d of the hose clamp body 24a with the hose retaining ring 18 of the hose 5. The state which caught the recessed part 18a is maintained.

Therefore, by the operation of contracting the extension tube 6, the portion of the downstream hose portion 12 upstream than the hose fixing ring 18 is compressed to be in a contracted state so that the pressing force in the direction in which the tube portion 4 is extended. It accumulates.

In this state, the operator releases the pressure holding of the hose clamp 24 to bring the pipe part 4 into a contracted state, and the cleaner main body 1 stands up against the floor to engage the locking projection 26c with the concave groove part 28. By doing so, it is stored in a predetermined place in a storage state shown in FIG.

As described above, according to the embodiment described above, the upstream hose part 11 is maintained by the fixing means 33 while the upstream hose part 11 is elongated during cleaning, so that the upstream hose part 11 is operated while the electric blower 2 is in operation. It is possible to prevent shrinkage due to negative pressure, etc., to ensure good cleaning properties.

In addition, when storing, the upstream hose part 11 is constricted and stored in the extension pipe 6, and the total length of the pipe part 4 can be shortened, and the space of the hose body 5 more than needed in the storage state. It can be made compact without occupying, and the aesthetics are not deteriorated, such as when the hose body 5 is wound around the extension pipe 6 or the vacuum cleaner main body 1, and the tube 4 or the like is disassembled and stored. Good storage property can be ensured, such as not having to.

That is, since the upstream hose part 11 has a larger shrinkage compared with the downstream hose part 12, and becomes in a contracted state in a natural length state, the upstream hose part 11 is in an extended state in the state where the upstream hose part 11 is extended. If there is no mechanism to maintain the upstream hose, the worker must apply external force in the direction that the worker always tensions the upstream hose so that the upstream hose is not contracted.

In addition, in the case where the suction port of the bottom brush 7 adheres to the bottom surface, for example, the upstream hose part 11 may shrink due to an increase in the degree of vacuum. 11) can be held by the fixing means 33 in an extended state, so that the pipe portion 4 which is contracted and shortened during storage can be easily configured while maintaining the extended state during the cleaning to secure a sufficient length. .

Moreover, a part of the downstream hose part 12 is accommodated in the extension pipe 6 in the state in which the upstream hose part 11 is constricted, and a part of the downstream hose part 12 is also extended in the accommodating state. Since the hose body 5 is not exposed more than necessary in the stored state because it is housed inside, the aesthetics in the stored state can be improved.

And when extending the hose body 5 by making the upstream side of the upstream hose part 11 slide in the extension pipe 6, the length of the pipe part 4 can be extended more, and the hose body 5 ), The tube portion 4 can be compactly collected by effectively using the length of the extension tube 6.

Moreover, the fixing means 33 is a hose connection joint which is a connection part of the upstream hose part 11 and the downstream hose part 12 in the downstream of the extension pipe 6 in the state which the upstream hose part 11 extended. By releasing 13), the upstream side hose part 11 can be easily maintained in the extended state.

In addition, when extending | stretching the pipe part 4 and using it, after extending | stretching the extension pipe 6, the hose which is the connection part of each hose part 11 and 12 only by tensioning the hose body 5 from the extension pipe 6, Since the connection joint 13 slides in the extension pipe 6, and each guide convex part 13d is caught by the hose clamp 24, the upstream hose part 11 can be easily maintained in the extended state.

And when the tube part 4 is made into the contracted state, the upstream hose part 11 whole is compressed only by compressing the extension pipe 6, keeping the hose fixing ring 18 closed by the hose clamp 24. FIG. And the upstream side can be accommodated inside the extension pipe 6 more easily than the hose fixing ring 18 of the downstream hose part 12, and the shrinkage operation of the pipe part 4 is also easy.

Moreover, the fixing means 33 which keeps the upstream hose part 11 extended can also be used as a means which keeps the downstream hose part 12 contracted, and when these means are provided separately, In comparison, the configuration can be simplified by the common configuration.

In addition, by arranging the fixing means 33 at the downstream end of the extension pipe 6, the entire downstream portion of the downstream hose part 12 is extended downstream of the extension pipe 6 in the state where the upstream hose part 11 is extended. Can be exposed, and the length of the hose body 5 can be utilized to the maximum.

The handle operating portion 31 is configured to transmit a signal by a wireless means such as an infrared ray transmitting portion 31c, so that the handle operating portion 31 is disposed within the hose body 5 from the handle operating portion 31 to the cleaner body 1 or the floor brush 7. It is not necessary to wire in the extension pipe 6 or the like, and the configuration can be simplified.

In addition, the position which installs the hose fixing ring 18 in the downstream hose part 12 can be set suitably according to the protrusion amount from the extension pipe 6 of the downstream hose part 12 in a storage state.

In addition, the detail of an electric vacuum cleaner is not limited to the said structure.

BRIEF DESCRIPTION OF THE DRAWINGS The perspective view which cut | disconnected a part as contraction state of the tube part of the vacuum cleaner of one Embodiment of this invention.

Fig. 2 is a perspective view in which part of the tube portion shows a contracted state of the hose portion;

Fig. 3 is a perspective view in which part of the downstream hose portion of the pipe portion is extended and cut away.

4 is a perspective view in which part of the hoses of the pipe section are extended and cut away.

5 is a perspective view showing a contracted state of the pipe part;

6 is a perspective view showing a maximum elongation state of the pipe portion;

Fig. 7 is a perspective cross-sectional view showing a state in which the tube portion is kept in a contracted state by the first locking means of the tube portion.

Fig. 8 is a perspective cross-sectional view showing a state in which the holding in the contracted state of the tube portion is released by the first locking means.

Fig. 9 is a perspective sectional view showing a state in which the fixing means of the pipe portion is held in the extension pipe in a state in which the downstream hose part of the hose body is shrunk by the downstream extension pipe.

Fig. 10 is a perspective cross-sectional view showing a state of movement of an extension pipe portion on the downstream side by releasing the holding on the first locking means.

Fig. 11 is a perspective cross-sectional view showing a state in which the fixing means releases the holding of the downstream hose portion by the movement of the extension tube portion on the downstream side.

Fig. 12 is a sectional view showing a state where the connecting portion contacts the fixing means when the respective hose portions are extended.

Fig. 13 is a sectional view showing a state in which a connecting portion operates a fixing means when the respective hose portions are elongated.

Fig. 14 is a sectional view showing a state where the connecting portion is caught by the fixing means when the respective hose portions are extended.

Fig. 15 is a perspective view showing a storage state of the vacuum cleaner.

Fig. 16 is a perspective view showing a use state of the electric cleaner.

<Description of the code>

1: cleaner body

2: electric blower

4: tube

6: extension tube

11: upstream hose part

12: downstream hose part

13 hose connection joint as connection

33: fixing means

Claims (5)

The vacuum cleaner body which accommodated an electric blower, A pipe part connected to the suction side of the electric blower and connected to the vacuum cleaner main body, The tube part, Extension tube, An upstream side hose part which is accommodated in the extension tube and is in a contracted state in a natural length state and is elongated by an external force; A downstream hose part connected to a downstream side of said upstream hose part in said extension pipe, being extended in a natural length state and contracted by an external force, and capable of drawing at least a part from said extension pipe; An electric vacuum cleaner comprising: fixing means capable of maintaining the extended state in the extended state of the upstream hose part. The vacuum cleaner according to claim 1, wherein the downstream hose part is at least partially housed in the extension tube when the upstream hose part is in a contracted state in a natural length state. The vacuum cleaner according to claim 1 or 2, wherein an upstream side of the upstream side hose part is slidable inside the extension tube. delete delete

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